PUBLIC HEALTH ASSESSMENT
HANSCOM FIELD/HANSCOM AIR FORCE BASE
BEDFORD, MIDDLESEX COUNTY, MASSACHUSETTS
EPA FACILITY ID: MA8570024424 
April 22, 2004
Prepared by:
Federal Facilities Assessment Branch
Division of Health Assessment and Consultation
Agency for Toxic Substances and Disease Registry
TABLE OF CONTENTS
EVALUATION OF ENVIRONMENTAL CONTAMINATION AND POTENTIAL EXPOSURE SITUATIONS
Figure 1. Area Map
Figure 2. IRP Sites at HF/HAFB
Figure 3. Demographics Within a One-Mile Radius of HF/HAFB
Table 1. Exposure Pathways evaluated at Hanscom Field/Hanscom Air Force Base
Table 2. IRP Sites at HAFB
Table 3. Contaminants Detected Above Comparison Values in Surface Soil at Sites 4 and 8
Table 4. Contaminants detected above Comparison Values in Surface Soil at Site 6
Table 5. Contaminants Detected Above Comparison Values in Shawsheen River Surface Water
Table 6. Contaminants Detected Above Comparison Values in Wetland Surface Water Surrounding Operable Unit 1
Table 7. Contaminants Detected Above Comparison Values in Elm Brook and Wetland Surface Water Surrounding IRP Site 4
Table 8. Contaminant Detected Above Comparison Values in Wetland Surface Water Surrounding Sites 6 and 21
Table 9. Contaminants Detected Above Comparison Values in Shawsheen River Sediments
Table 10. Contaminants Detected Above Comparison Values in Wetland Sediments
Table 11. Contaminants Detected Above Comparison Values in the Hartwell Road Production Wells
Table C-1. Exposure Doses for Soil Contaminants Greater than Comparison Values
Table C-2. Exposure Doses for Surface Water Chemicals Greater than Comparison Values
Table C-3. Exposure Doses for Sediment Contaminants Greater than Comparison Values
Table C-4. Exposure Doses for Contaminants in Hartwell Road Production Wells Greater than Comparison Values
| AST | aboveground storage tank |
| ATSDR | Agency for Toxic Substances and Disease Registry |
| bgs | below ground surface |
| BTEX | benzene/toluene/ethylbenzene/xylene |
| CEL | cancer effect level |
| CERCLA | Comprehensive Environmental Response, Compensation, and Liability Act |
| CREG | cancer risk evaluation guide (ATSDR) |
| CV | comparison value |
| DCE | dichloroethylene |
| DDT | dichlorodiphenyltrichloroethane |
| DEP | Massachusetts Department of Environmental Protection |
| EMEG | environmental media evaluation guide (ATSDR) |
| EPA | U.S. Environmental Protection Agency |
| ESC | Electronic Systems Center |
| FAA | Federal Aviation Administration |
| FDA | U.S. Food and Drug Administration |
| HAFB | Hanscom Air Force Base |
| HF | Hanscom Field |
| HF/HAFB | Hanscom Field/Hanscom Air Force Base |
| IRA | interim removal action |
| JP-4 | jet propellant 4 |
| LNAPL | light non-aqueous phase liquid |
| LOAEL | lowest-observed-adverse-effect level |
| Massport | Massachusetts Port Authority |
| MCL | maximum contaminant level (EPA) |
| MCP | Massachusetts Contingency Plan |
| mg/kg/day | milligram per kilogram per day |
| MRL | minimal risk level (ATSDR) |
| msl | mean sea level |
| MWRA | Massachusetts Water Resources Authority |
| NFA | no further action |
| NIOSH | National Institute for Occupational Safety and Health |
| NPDES | National Pollutant Discharge Elimination System |
| NPL | National Priorities List |
| OSHA | Occupational Safety and Health Administration |
| OU | operable unit |
| ORC® | Oxygen Release Compound® |
| PAH | polycyclic aromatic hydrocarbons |
| PCB | polychlorinated biphenyl |
| PHA | public health assessment |
| PHAP | public health action plan |
| ppb | parts per billion |
| ppm | parts per million |
| QAPP | Quality Assurance Project Plan |
| RBC | risk-based concentration (EPA) |
| RCRA | Resource Conservation and Recovery Act |
| RfD | reference dose (EPA) |
| RI | Remedial Investigation |
| RMEG | reference dose media evaluation guide (ATSDR) |
| ROD | Record of Decision |
| SVOC | semi-volatile organic compound |
| TCE | trichloroethylene |
| TPH | total petroleum hydrocarbons |
| USAF | U.S. Air Force |
| USGS | U.S. Geological Survey |
| UST | underground storage tank |
| VOC | volatile organic compound |
| VPH | volatile petroleum hydrocarbons |
